Xref:	news2.mv.net comp.os.msdos.djgpp:1619
From:	Tom_King AT cegelecproj DOT co DOT uk
Newsgroups:	comp.os.msdos.djgpp
Subject:	V2 Performance slower than V1?
Date:	28 Feb 1996 04:19:33 -0500
Organization:	Yale CS Mail/News Gateway
Lines:	24
Sender:	daemon AT cs DOT yale DOT edu
Message-ID:	<199602280918.JAA00657@wraith.cegelecproj.co.uk>
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

All,

I recently downloaded djgpp V2. When installed, I tried compiling a
program that I compiled many times under V1. It compiled fine, but
appeared to run about 10-20% slower than under V1.

I used the same optimisation flags as I did under V1, and tried with
and without the -fno-strength-reduce entry in lib/specs (as mentioned
in the FAQ).The flags I used were

-O3 -m486 -fomit-frame-pointer

Anyone know why V2 might be slower?
Are there any other compiler options I could use for *maximum*
performance optimisation?

Thanks in advance,
Tom King

--
***********************************************************************
* Tom King (Tom_King AT cegelecproj DOT co DOT uk)                               *
* ...all opinions expressed are my own and not those of my employer...*
***********************************************************************

- Raw text -